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incubator-nuttx/arch/sh/include/sh1/irq.h

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/************************************************************************************
* arch/sh/include/sh1/irq.h
*
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/irq.h
*/
#ifndef __ARCH_SH_INCLUDE_SH1_IRQ_H
#define __ARCH_SH_INCLUDE_SH1_IRQ_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
/************************************************************************************
* Definitions
************************************************************************************/
/* IRQ channels */
/* In the current implementation, CMON catches the following IRQ.
* Support for traps can be provided by simply enabling the following, adding
* vectors in sh1_head.S and adding handlers in sh1_vector.S
*/
/* Illegal instructions / Address errors */
#if 0 /* Handled by CMON */
# define SH1_INVINSTR_IRQ (0) /* General invalid instruction */
# define SH1_INVSLOT_IRQ (1) /* Invalid slot instruction */
# define SH1_BUSERR_IRQ (2) /* CPU bus error */
# define SH1_DMAERR_IRQ (3) /* DMA bus error */
# define SH1_NMI_IRQ (4) /* NMI */
# define SH1_USRBRK_IRQ (6) /* User break */
# define SH1_TRAP_IRQBASE (7)
# define SH1_TRAP0_IRQ SH1_TRAP_IRQBASE /* TRAPA instruction (user break) */
# define SH1_TRAP1_IRQ (SH1_TRAP_IRQBASE+1) /* " " " " " " " " */
# define SH1_TRAP2_IRQ (SH1_TRAP_IRQBASE+2) /* " " " " " " " " */
# define SH1_TRAP3_IRQ (SH1_TRAP_IRQBASE+3) /* " " " " " " " " */
# define SH1_TRAP4_IRQ (SH1_TRAP_IRQBASE+4) /* " " " " " " " " */
# define SH1_TRAP5_IRQ (SH1_TRAP_IRQBASE+5) /* " " " " " " " " */
# define SH1_TRAP6_IRQ (SH1_TRAP_IRQBASE+6) /* " " " " " " " " */
# define SH1_TRAP7_IRQ (SH1_TRAP_IRQBASE+7) /* " " " " " " " " */
# define SH1_TRAP8_IRQ (SH1_TRAP_IRQBASE+8) /* " " " " " " " " */
# define SH1_TRAP9_IRQ (SH1_TRAP_IRQBASE+9) /* " " " " " " " " */
# define SH1_TRAP10_IRQ (SH1_TRAP_IRQBASE+10) /* " " " " " " " " */
# define SH1_TRAP11_IRQ (SH1_TRAP_IRQBASE+11) /* " " " " " " " " */
# define SH1_TRAP12_IRQ (SH1_TRAP_IRQBASE+12) /* " " " " " " " " */
# define SH1_TRAP13_IRQ (SH1_TRAP_IRQBASE+13) /* " " " " " " " " */
# define SH1_TRAP14_IRQ (SH1_TRAP_IRQBASE+14) /* " " " " " " " " */
# define SH1_TRAP15_IRQ (SH1_TRAP_IRQBASE+15) /* " " " " " " " " */
# define SH1_TRAP16_IRQ (SH1_TRAP_IRQBASE+16) /* " " " " " " " " */
# define SH1_TRAP17_IRQ (SH1_TRAP_IRQBASE+17) /* " " " " " " " " */
# define SH1_TRAP18_IRQ (SH1_TRAP_IRQBASE+18) /* " " " " " " " " */
# define SH1_TRAP19_IRQ (SH1_TRAP_IRQBASE+19) /* " " " " " " " " */
# define SH1_TRAP20_IRQ (SH1_TRAP_IRQBASE+20) /* " " " " " " " " */
# define SH1_TRAP21_IRQ (SH1_TRAP_IRQBASE+21) /* " " " " " " " " */
# define SH1_TRAP22_IRQ (SH1_TRAP_IRQBASE+22) /* " " " " " " " " */
# define SH1_TRAP23_IRQ (SH1_TRAP_IRQBASE+23) /* " " " " " " " " */
# define SH1_TRAP24_IRQ (SH1_TRAP_IRQBASE+24) /* " " " " " " " " */
# define SH1_TRAP25_IRQ (SH1_TRAP_IRQBASE+25) /* " " " " " " " " */
# define SH1_TRAP26_IRQ (SH1_TRAP_IRQBASE+26) /* " " " " " " " " */
# define SH1_TRAP27_IRQ (SH1_TRAP_IRQBASE+27) /* " " " " " " " " */
# define SH1_TRAP28_IRQ (SH1_TRAP_IRQBASE+28) /* " " " " " " " " */
# define SH1_TRAP29_IRQ (SH1_TRAP_IRQBASE+29) /* " " " " " " " " */
# define SH1_TRAP30_IRQ (SH1_TRAP_IRQBASE+30) /* " " " " " " " " */
# define SH1_TRAP31_IRQ (SH1_TRAP_IRQBASE+31) /* " " " " " " " " */
# define SH1_IRQ_IRQBASE (SH1_TRAP_IRQBASE+32)
/* Interrupts */
# define SH1_IRQ0_IRQ SH1_IRQ_IRQBASE /* IRQ0 */
# define SH1_IRQ1_IRQ (SH1_IRQ_IRQBASE+1) /* IRQ1 */
# define SH1_IRQ2_IRQ (SH1_IRQ_IRQBASE+2) /* IRQ2 */
# define SH1_IRQ3_IRQ (SH1_IRQ_IRQBASE+3) /* IRQ3 */
# define SH1_IRQ4_IRQ (SH1_IRQ_IRQBASE+4) /* IRQ4 */
# define SH1_IRQ5_IRQ (SH1_IRQ_IRQBASE+5) /* IRQ5 */
# define SH1_IRQ6_IRQ (SH1_IRQ_IRQBASE+6) /* IRQ6 */
# define SH1_IRQ7_IRQ (SH1_IRQ_IRQBASE+7) /* IRQ7 */
# define SH1_CHIP_IRQBASE (SH1_IRQ_IRQBASE+8)
#else
# define SH1_CHIP_IRQBASE (0)
#endif
/* On-chip modules -- The following may be unique to the 7032 */
#ifdef CONFIG_ARCH_SH7032
/* DMAC */
#ifdef CONFIG_SH1_DMAC0 /* DMAC0 */
# define SH1_DEI0_IRQ SH1_CHIP_IRQBASE /* DEI0 */
# define SH1_DMAC1_IRQBASE (SH1_CHIP_IRQBASE+1)
#else
# define SH1_DMAC1_IRQBASE SH1_CHIP_IRQBASE
#endif
#ifdef CONFIG_SH1_DMAC1 /* DMAC1 */
# define SH1_DEI1_IRQ SH1_DMAC1_IRQBASE /* DEI1 */
# define SH1_DMAC2_IRQBASE (SH1_DMAC1_IRQBASE+1)
#else
# define SH1_DMAC2_IRQBASE SH1_DMAC1_IRQBASE
#endif
#ifdef CONFIG_SH1_DMAC2 /* DMAC2 */
# define SH1_DEI2_IRQ SH1_DMAC2_IRQBASE /* DEI2 */
# define SH1_DMAC3_IRQBASE (SH1_DMAC2_IRQBASE+1)
#else
# define SH1_DMAC3_IRQBASE SH1_DMAC2_IRQBASE
#endif
#ifdef CONFIG_SH1_DMAC3 /* DMAC3 */
# define SH1_DEI3_IRQ SH1_DMAC3_IRQBASE /* DEI3 */
# define SH1_ITU0_IRQBASE (SH1_DMAC3_IRQBASE+1)
#else
# define SH1_ITU0_IRQBASE SH1_DMAC3_IRQBASE
#endif
/* ITU */
/* ITU0 is the system clock and is always defined */
#define SH1_IMIA0_IRQ SH1_ITU0_IRQBASE /* IMIA0 */
#define SH1_IMIB0_IRQ (SH1_ITU0_IRQBASE+1) /* IMIB0 */
#define SH1_OVI0_IRQ (SH1_ITU0_IRQBASE+2) /* OVI0 */
#define SH1_ITU1_IRQBASE (SH1_ITU0_IRQBASE+3)
#ifdef CONFIG_SH1_ITU1 /* ITU1 */
# define SH1_IMIA1_IRQ SH1_ITU1_IRQBASE /* IMIA1 */
# define SH1_IMIB1_IRQ (SH1_ITU1_IRQBASE+1) /* IMIB1 */
# define SH1_OVI1_IRQ (SH1_ITU1_IRQBASE+2) /* OVI1 */
# define SH1_ITU2_IRQBASE (SH1_ITU1_IRQBASE+3)
#else
# define SH1_ITU2_IRQBASE SH1_ITU1_IRQBASE
#endif
#ifdef CONFIG_SH1_ITU2 /* ITU2 */
# define SH1_IMIA2_IRQ SH1_ITU2_IRQBASE /* IMIA2 */
# define SH1_IMIB2_IRQ (SH1_ITU2_IRQBASE+1) /* IMIB2 */
# define SH1_OVI2_IRQ (SH1_ITU2_IRQBASE+2) /* OVI2 */
# define SH1_ITU3_IRQBASE (SH1_ITU2_IRQBASE+3)
#else
# define SH1_ITU3_IRQBASE SH1_ITU2_IRQBASE
#endif
#ifdef CONFIG_SH1_ITU3 /* ITU3 */
# define SH1_IMIA3_IRQ SH1_ITU3_IRQBASE /* IMIA3 */
# define SH1_IMIB3_IRQ (SH1_ITU3_IRQBASE+1) /* IMIB3 */
# define SH1_OVI3_IRQ (SH1_ITU3_IRQBASE+2) /* OVI3 */
# define SH1_ITU4_IRQBASE (SH1_ITU3_IRQBASE+3)
#else
# define SH1_ITU4_IRQBASE SH1_ITU3_IRQBASE
#endif
#ifdef CONFIG_SH1_ITU4 /* ITU4 */
# define SH1_IMIA4_IRQ SH1_ITU4_IRQBASE /* IMIA4 */
# define SH1_IMIB4_IRQ (SH1_ITU4_IRQBASE+1) /* IMIB4 */
# define SH1_OVI4_IRQ (SH1_ITU4_IRQBASE+2) /* OVI4 */
# define SH1_SCI0_IRQBASE (SH1_ITU4_IRQBASE+3)
#else
# define SH1_SCI0_IRQBASE SH1_ITU4_IRQBASE
#endif
/* SCI */
#define SH1_ERI_IRQ_OFFSET (0) /* ERI0 */
#define SH1_RXI_IRQ_OFFSET (1) /* RxI0 */
#define SH1_TXI_IRQ_OFFSET (2) /* TxI0 */
#define SH1_TEI_IRQ_OFFSET (3) /* TEI0 */
#define SH1_SCI_NIRQS (4)
#ifdef CONFIG_SH1_SCI0 /* SCI0 */
# define SH1_ERI0_IRQ (SH1_SCI0_IRQBASE+SH1_ERI_IRQ_OFFSET) /* ERI0 */
# define SH1_RXI0_IRQ (SH1_SCI0_IRQBASE+SH1_RXI_IRQ_OFFSET) /* RxI0 */
# define SH1_TXI0_IRQ (SH1_SCI0_IRQBASE+SH1_TXI_IRQ_OFFSET) /* TxI0 */
# define SH1_TEI0_IRQ (SH1_SCI0_IRQBASE+SH1_TEI_IRQ_OFFSET) /* TEI0 */
# define SH1_SCI1_IRQBASE (SH1_SCI0_IRQBASE+SH1_SCI_NIRQS)
#else
# define SH1_SCI1_IRQBASE SH1_SCI0_IRQBASE
#endif
#ifdef CONFIG_SH1_SCI1 /* SCI1 */
# define SH1_ERI1_IRQ (SH1_SCI1_IRQBASE+SH1_ERI_IRQ_OFFSET) /* ERI1 */
# define SH1_RXI1_IRQ (SH1_SCI1_IRQBASE+SH1_RXI_IRQ_OFFSET) /* RxI1 */
# define SH1_TXI1_IRQ (SH1_SCI1_IRQBASE+SH1_TXI_IRQ_OFFSET) /* TxI1 */
# define SH1_TEI1_IRQ (SH1_SCI1_IRQBASE+SH1_TEI_IRQ_OFFSET) /* TEI1 */
# define SH1_PEI_IRQBASE (SH1_SCI1_IRQBASE+SH1_SCI_NIRQS)
#else
# define SH1_PEI_IRQBASE SH1_SCI1_IRQBASE
#endif
#ifdef CONFIG_SH1_PCU
# define SH1_PEI_IRQ SH1_PEI_IRQBASE /* Parity control unit PEI */
# define SH1_AD_IRQBASE (SH1_PEI_IRQBASE+1)
#else
# define SH1_AD_IRQBASE SH1_PEI_IRQBASE
#endif
#ifdef CONFIG_SH1_AD
# define SH1_ADITI_IRQ SH1_AD_IRQBASE /* A/D ITI */
# define SH1_WDT_IRQBASE (SH1_AD_IRQBASE+1)
#else
# define SH1_WDT_IRQBASE SH1_AD_IRQBASE
#endif
#ifdef CONFIG_SH1_WDT
# define SH1_WDTITI_IRQ SH1_WDT_IRQBASE /* WDT ITI */
# define SH1_CMI_IRQBASE (SH1_WDT_IRQBASE+1)
#else
# define SH1_CMI_IRQBASE SH1_WDT_IRQBASE
#endif
#ifdef CONFIG_SH1_CMI
# define SH1_CMI_IRQ SH1_CMI_IRQBASE /* REF CMI */
# define NR_IRQS (SH1_CMI_IRQBASE+1) /* Total number of supported IRQs */
#else
# define NR_IRQS SH1_CMI_IRQBASE /* Total number of supported IRQs */
#endif
#define SH1_SYSTIMER_IRQ SH1_IMIA0_IRQ
#endif
/* Vector table offets **************************************************************/
/* The following provides the vector numbers for each IRQ. The IRQ numbers (above)
* form the densely packet number space used by the system to identify IRQs. The
* following are the (relatively) loosely spaced offsets that identify the location
* of the corresponding vector in the vector table.
*
* These offsets are specified as a vector number (suitably for indexing an array
* of uint32_t) but would have to by multiplied by 4 to get an addressable, byte
* offset.
*/
/* Resets */
#define SH1_PWRONPC_VNDX (0) /* 0: Power-on reset (hard, NMI high) PC*/
#define SH1_PWRONSP_VNDX (1) /* 1: Power-on reset (hard, NMI high) SP */
#define SH1_MRESETPC_VNDX (2) /* 2: Power-on reset (hard, NMI high) PC*/
#define SH1_MRESETSP_VNDX (3) /* 3: Power-on reset (hard, NMI high) SP */
/* Illegal instructions / Address errors */
#define SH1_INVINSTR_VNDX (4) /* 4: General invalid instruction */
/* 5: Reserved for system */
#define SH1_INVSLOT_VNDX (6) /* 6: Invalid slot instruction */
/* 7-8: Reserved for system */
#define SH1_BUSERR_VNDX (9) /* 9: CPU bus error */
#define SH1_DMAERR_VNDX (10) /* 10: DMA bus error */
/* NMI, user break */
#define SH1_NMI_VNDX (11) /* 11: NMI */
#define SH1_USRBRK_VNDX (12) /* 12: User break */
/* 13-31: Reserved for system */
/* Trap instruction */
#define SH1_TRAP_VNDX (32) /* 32-63: TRAPA instruction (user break) */
#define SH1_TRAP0_VNDX (32) /* 32: TRAPA instruction (user break) */
#define SH1_TRAP1_VNDX (33) /* 33: " " " " " " " " */
#define SH1_TRAP2_VNDX (34) /* 34: " " " " " " " " */
#define SH1_TRAP3_VNDX (35) /* 35: " " " " " " " " */
#define SH1_TRAP4_VNDX (36) /* 36: " " " " " " " " */
#define SH1_TRAP5_VNDX (37) /* 37: " " " " " " " " */
#define SH1_TRAP6_VNDX (38) /* 38: " " " " " " " " */
#define SH1_TRAP7_VNDX (39) /* 39: " " " " " " " " */
#define SH1_TRAP8_VNDX (40) /* 40: " " " " " " " " */
#define SH1_TRAP9_VNDX (41) /* 41: " " " " " " " " */
#define SH1_TRAP10_VNDX (42) /* 42: " " " " " " " " */
#define SH1_TRAP11_VNDX (43) /* 43: " " " " " " " " */
#define SH1_TRAP12_VNDX (44) /* 44: " " " " " " " " */
#define SH1_TRAP13_VNDX (45) /* 45: " " " " " " " " */
#define SH1_TRAP14_VNDX (46) /* 46: " " " " " " " " */
#define SH1_TRAP15_VNDX (47) /* 47: " " " " " " " " */
#define SH1_TRAP16_VNDX (48) /* 48: " " " " " " " " */
#define SH1_TRAP17_VNDX (49) /* 49: " " " " " " " " */
#define SH1_TRAP18_VNDX (50) /* 50: " " " " " " " " */
#define SH1_TRAP19_VNDX (51) /* 51: " " " " " " " " */
#define SH1_TRAP20_VNDX (52) /* 52: " " " " " " " " */
#define SH1_TRAP21_VNDX (53) /* 53: " " " " " " " " */
#define SH1_TRAP22_VNDX (54) /* 54: " " " " " " " " */
#define SH1_TRAP23_VNDX (55) /* 55: " " " " " " " " */
#define SH1_TRAP24_VNDX (56) /* 56: " " " " " " " " */
#define SH1_TRAP25_VNDX (57) /* 57: " " " " " " " " */
#define SH1_TRAP26_VNDX (58) /* 58: " " " " " " " " */
#define SH1_TRAP27_VNDX (59) /* 59: " " " " " " " " */
#define SH1_TRAP28_VNDX (60) /* 60: " " " " " " " " */
#define SH1_TRAP29_VNDX (61) /* 61: " " " " " " " " */
#define SH1_TRAP30_VNDX (62) /* 62: " " " " " " " " */
#define SH1_TRAP31_VNDX (63) /* 63: " " " " " " " " */
/* Interrupts */
#define SH1_IRQ_VNDX (64) /* 64-71: IRQ0-7 */
#define SH1_IRQ0_VNDX (64) /* 64: IRQ0 */
#define SH1_IRQ1_VNDX (65) /* 65: IRQ1 */
#define SH1_IRQ2_VNDX (66) /* 66: IRQ2 */
#define SH1_IRQ3_VNDX (67) /* 67: IRQ3 */
#define SH1_IRQ4_VNDX (68) /* 68: IRQ4 */
#define SH1_IRQ5_VNDX (69) /* 69: IRQ5 */
#define SH1_IRQ6_VNDX (70) /* 70: IRQ6 */
#define SH1_IRQ7_VNDX (71) /* 71: IRQ7 */
#define SH1_LASTCMN_VNDX (71)
#define SH1_NCMN_VECTORS (72)
/* On-chip modules -- The following may be unique to the 7032 */
#ifdef CONFIG_ARCH_SH7032
/* DMAC */
#define SH1_DMAC0_VNDX (72) /* 72-73: DMAC0 */
#define SH1_DEI0_VNDX (72) /* 72: DMAC0 DEI0 */
/* 73: Reserved */
#define SH1_DMAC1_VNDX (74) /* 74-75: DMAC1 */
#define SH1_DEI1_VNDX (74) /* 74: DMAC1 DEI1 */
/* 75: Reserved */
#define SH1_DMAC2_VNDX (76) /* 76-77: DMAC2 */
#define SH1_DEI2_VNDX (76) /* 76: DMAC2 DEI2 */
/* 77: Reserved */
#define SH1_DMAC3_VNDX (78) /* 78-79: DMAC3 */
#define SH1_DEI3_VNDX (78) /* 78: DMAC3 DEI3 */
/* 79: Reserved */
/* ITU */
#define SH1_IMIA0_VNDX (80) /* 80: ITU0 IMIA0 */
#define SH1_IMIB0_VNDX (81) /* 81: IMIB0 */
#define SH1_OVI0_VNDX (82) /* 82: OVI0 */
/* 83: Reserved */
#define SH1_IMIA1_VNDX (84) /* 84: ITU1 IMIA1 */
#define SH1_IMIB1_VNDX (85) /* 85: IMIB1 */
#define SH1_OVI1_VNDX (86) /* 86: OVI1 */
/* 87: Reserved */
#define SH1_IMIA2_VNDX (88) /* 88: ITU2 IMIA2 */
#define SH1_IMIB2_VNDX (89) /* 89: IMIB2 */
#define SH1_OVI2_VNDX (90) /* 90: OVI2 */
/* 91: Reserved */
#define SH1_IMIA3_VNDX (92) /* 92: ITU3 IMIA3 */
#define SH1_IMIB3_VNDX (93) /* 93: IMIB3 */
#define SH1_OVI3_VNDX (94) /* 94: OVI3 */
/* 95: Reserved */
#define SH1_IMIA4_VNDX (96) /* 96: ITU4 IMIA4 */
#define SH1_IMIB4_VNDX (97) /* 97: IMIB4 */
#define SH1_OVI4_VNDX (98) /* 98: OVI4 */
/* 99: Reserved */
/* SCI */
#define SH1_ERI0_VNDX (100) /* 100: SCI0 ERI0 */
#define SH1_RXI0_VNDX (101) /* 101: RxI0 */
#define SH1_TXI0_VNDX (102) /* 102: TxI0 */
#define SH1_TEI0_VNDX (103) /* 103: TEI0 */
#define SH1_ERI1_VNDX (104) /* 104: SCI1 ERI1 */
#define SH1_RXI1_VNDX (105) /* 105: RxI1 */
#define SH1_TXI1_VNDX (106) /* 106: TxI1 */
#define SH1_TEI1_VNDX (107) /* 107: TEI1 */
#define SH1_PEI_VNDX (108) /* 108: Parity control unit PEI */
#define SH1_ADITI_VNDX (109) /* 109: A/D ITI */
/* 110-111: Reserved */
#define SH1_WDTITI_VNDX (112) /* 112: WDT ITI */
#define SH1_CMI_VNDX (113) /* 113: REF CMI */
/* 114-115: Reserved */
/* 116-255 reserved */
#endif
#define SH1_LAST_VNDX (255)
#define SH1_NVECTORS (256)
/* IRQ Stack Frame Format. The SH-1 has a push down stack. The PC
* and SR are pushed by hardware at the time an IRQ is taken.
*/
/* Saved to the stacked by up_vector */
#define REG_R8 (0)
#define REG_R9 (1)
#define REG_R10 (2)
#define REG_R11 (3)
#define REG_R12 (4)
#define REG_R13 (5)
#define REG_R14 (6)
#define REG_PR (7)
#define REG_GBR (8)
/* The value of the stack pointer *before* the interrupt occurred */
#define REG_R15 (9)
#define REG_SP REG_R15
/* These registers do not need to be preserved by up_saveusercontext */
#define REG_MACL (10)
#define REG_MACH (11)
#define REG_R0 (12)
#define REG_R1 (13)
#define REG_R2 (14)
#define REG_R3 (15)
#define REG_R5 (16)
#define REG_R6 (17)
#define REG_R7 (18)
/* Saved to the stack by the trampoline logic */
#define REG_R4 (19)
/* Pushed by hardware when the exception is taken */
#define REG_PC (20)
#define REG_SR (21)
#define XCPTCONTEXT_REGS (22)
#define XCPTCONTEXT_SIZE (4 * XCPTCONTEXT_REGS)
/************************************************************************************
* Public Types
************************************************************************************/
/* This struct defines the way the registers are stored. We need to save: */
#ifndef __ASSEMBLY__
struct xcptcontext
{
/* The following function pointer is non-zero if there are pending signals
* to be processed.
*/
#ifndef CONFIG_DISABLE_SIGNALS
void *sigdeliver; /* Actual type is sig_deliver_t */
/* These are saved copies of LR and SR used during signal processing. */
uint32_t saved_pc;
uint32_t saved_sr;
#endif
/* Register save area */
uint32_t regs[XCPTCONTEXT_REGS];
};
#endif
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/************************************************************************************
* Inline Functions
************************************************************************************/
#ifndef __ASSEMBLY__
/* Get the current value of the SR */
static inline irqstate_t __getsr(void)
{
irqstate_t flags;
__asm__ __volatile__ ("stc sr, %0" : "=r" (flags));
return flags;
}
/* Set the new value of the SR */
static inline void __setsr(irqstate_t sr)
{
__asm__ __volatile__ ("ldc %0, sr" : : "r" (sr));
}
/* Return the current interrupt enable state & disable IRQs */
static inline irqstate_t irqsave(void)
{
irqstate_t flags = __getsr();
__setsr(flags | 0x000000f0);
return flags;
}
/* Disable IRQs */
static inline void irqdisable(void)
{
uint32_t flags = __getsr();
__setsr(flags | 0x000000f0);
}
/* Enable IRQs */
static inline void irqenable(void)
{
uint32_t flags = __getsr();
__setsr(flags & ~0x000000f0);
}
/* Restore saved IRQ state */
static inline void irqrestore(irqstate_t flags)
{
if ((flags & 0x000000f0) != 0x000000f0)
{
irqenable();
}
else
{
irqdisable();
}
}
#endif
/************************************************************************************
* Public Functions
************************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_SH_INCLUDE_SH1_IRQ_H */
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